Allstar Performance Ring & Pinion Gear Set — GM 8.5in 4.10 Ratio | ALL70126 Fabrication>Coolant Fill Necks BMRs AA754 lower A-arms eliminate

BMRs AA754 lower A-arms eliminate A-arm deflection

used as the upper slug in the GM lower spindle checker kit (ALL11176

----Available with either a CNC machined aluminum or Delrin thermoplastic outer shell

Interior Diameter (ID): 3/4in

Textured black finish

Allstar Performance Ring & Pinion Gear Set — GM 8.5in 4.10 Ratio | ALL70126 Fabrication>Coolant Fill Necks BMRs AA754 lower A-arms eliminateThis Allstar Performance ring and pinion gear set is a 4. 10 ratio kit for GM 8. 5in 10 bolt rear ends. It uses a 27 spline pinion gear and is part of Allstar's 3 Series housing fitment line. The ring and pinion are lapped in matched sets at the factory for quiet operation and consistent tooth contact, and are built for race, street, and off road use. Allstar Spec Sheet (PDF) Allstar Ring & Pinion Instruction Sheet (PDF) Compatibility Fits GM 8. 5in